Concrete building construction.



No. 811,560. PATENTED FEB. 6, 1906. J. B. HINCHMAN.

CONCRETE BUILDING CON$TRUGTION.

APPLICATION FILED JUNE 24! 1904,

UNIT E I) STATES PATENT OFFICE.

ooncnz-re BUILDING oous'i'nuc-riouf Specification of Letters Patent.

Patented Feb. 6, 1906.

n u 31 ,1 Jane 24.1904. Serial No. 213,970.

To (LN whom 1'15 may concern.-

Be it known that 1,.Lmss B. lllNCHMAN, a citizen of the United States of America, residing in the cit and county of Denver and State of Colorado, have invented certain new and useful Improvements in Concrete Build-- ing, Construction, of which the following is n specification, reference being had therein to the aceompnnying drawings.

My invention relates to certain new and useful improvements in sheering-erms for tension-rods, and more particularly to that class of tcnsion-rods employed in connection with fireproof building construction, being constructed with especial reference to tireproof iioorings, oeilin s, beams, tanks, walls, columns, culverts, slnhs, independent blocks, gutters and curbs, bridges, and, in fact, for almost any use in which concrete and metal are employed; and it has for its primary ohjeet 'to provide a shearingmrrn that cornparetively inexpensive to Innnufertnre and one which at the same time may he applied to the various bar shapes used in huilding: eon structirm.

1 an swore that it is old to apply shearing be heated to a white heat, applied with a. priso mstic hammer, and several workmen are nee essery for each operation. In my invention no rivets: are used and one 'worlnnsn can no complish twice as much work in the some time as four workmen by the old method, my invention thereby saving labor. time, and expense.

Referring to the acoompenying drawings, forming a part of this speeiii etion, and wherein like numerals designate like parts, Figure l is a side elevation showing my improved shearing-arm and the novel means for attaching the same to a tension-rod. Fig. Zis an independent view of the form of shearing- :irm shown in Fig. 1. Fig. 3 is a modification embodying a slight departure from the construotion shown in Fi .2. Figs.4,5,6,7,8,9, l0, 1 l, 12 13 show various shapes of bar-iron in connection with which in shearing-am may be used. Fig. 14 is a view of the form of sheering-erm shown independentl in Fig. 3, this View showing the arm ettac ed to a tension-her and novel means for securing the some. Fig. 15 shows a view of a part of a wire oahle which may be empioyed as a ten-- sion-rod.

Figs 2 and 3 illustrate forms of shearing arms which I deem Inost important, these arms comprising a piece of stout wire 8,.twisted upon itself and having its one end bent nto the form of a loop, the ends of the twisted portion extending in opposite directions. In Fig. 2 l haveshown a double loop, as at 9, one member of the loop being bent downwardly'at an angle to the body of the shearing-iron and the other member of the loop bent upwardly at an angle to the first-named member, as shown in Figs. 5 and 6. ,In Fig. 3 the sheeringerrn has its arm bent into a single loop 10, the loop being bent downwardly on both sides and then upwardly, as shown.

Figs. 1 and 14 illustrate, respectively, the shesringerms shown in Figs. 2 and 3 as applied to a tension 7 bar of any desired form. in efleh instance the loop psssed over the hm, and a nail, wedge, or other form of con necting link 11 is inserted between the under surface of the bar and the loop.

Figs. 4,5, 6, 7,3, 9, 10,11,12, 13, 14,9.nd 15 show a few examples of the numerous bar shapes in ronneetion with which my improved sheering her may be used, Fig. 4 being a double diamond her; Fi 5, a double square; Fig. 6, a double circle; l ig. 7, a double eemicircle; Fig. 8, {t corrugated square bar; Fig. 9, a. twisted her; Fig. 10, a T1ron; Fi 11,:1. flat bar; Fig. 12, an angle-iron, and 'ig. 13 en Thar.

As stated shove, the size of the loops in the wire-shesring arms oropenings in. the sheet-- metal shearing-arms, as the may be, can be varied to suit the various forms of bars in congestion with which the shearingorms are use Fig. 16 shows the wire eeble whieh may be used as a tension-rod, and the shearin -ba-rs may be secured thereto, as is shown in igs. 1 or 14.

The only tool' necessary is a hammer. One workman need only be employed, the sole operation being to place the shearin -am1 over the bar and securely fasten it t ereon by snail driven in tight with a few heavy strokesof the h mmer. It will be readily apparent that by removing the nail, wedge, 01'

to what I s said loo being other connectin link, or by straightening consistin the tenon, the s eating-arm may be readily removed intact.

It is obvious that the scope of my inven- 5 tion is so broad that many minor changes may be made without departing from the general spirit of the structure as claimed be- Havi thus fully described my invention, im as new, and desire to secure by Letters Patent, is-

1. A shearin -arm for tension-rods consisting of a sing e piece of wire twisted upon itself and having one end formed in aloop lent at an angle to the arm and bac upon itself.

2. A shearin arm for tension-rods conof a sing e piece of wire twisted upon itself and having one end formed in a loop,

no the said loop being twisted so as to form a douhle loop' and being bent at an angle to the arm and back upon itself.

3. tension-rod for composite building purp sas having shearing-arms removably mo ted at angles thereon, each of said 'shea ing-arms having one of its ends bent at an angle to itself, the said tension-rod passing through the said bent end, and a wedge for secu the shearing-anus to the tension-bar inserte between each of the said shearingarms' and the tension-bar.

- 4. A tension-rod for composite building purposes corndprising shearing-arms remova'bl m'ounte thereon, each shearing-arm a of a single piece of wire twisted upon itself nndhaving one of its ends iorlm'd in a loop the said loo )Pd end being bent at right-angles upon itself, the said tension-rod pnssing through the said looped (-nd and means for securing the sln-m'ing-au'm to tho tension-bar inserted between the said arm and bar.

5. A tension-rod l'or compositibuilding purposes com 1rising sllL'ul'ingmrms removably mounted thereon, each shearing-arm consisting of a single piece of Wllt twisted upon itself and having one end formed in :1 loop, the said loop being twisted so as to be divided into a double loop and being bent at right angles upon itself, thrsaid tension-rod passing through the said looped end and I.

wedge for securing the shearing-arm to the tension-bar inserted between the snill nrm and bar.

(i. The combination with the reinforcingrods of a reinforced com-rote lwnrmoi stirrnps or shear-bars bent partially around s'nld JAJHES Bi 'lll NCHMAN. \Vitnesses:

B. D. McNAsson, Bnm'rox GREGORY.- 

